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“ss7SS7 C7 Signalling Gateway

With low cost, reliable, high bandwidth IP networks available for distribution of signalling, the SS7 Signalling Gateway provides the means to bridge the SS7 network from the traditional PSTN and Mobile TDM interconnects to IP.

Physical Dimensions

Physical Interfaces E1/T1, STM-1
Scaling 2 to 128 E1s
Upgrades 1 E1 & 8E1s
Form Factor PCI
Chassis 1U

IP Protocols

SIP-T RFC 3372 Session Initiation Protocol for Telephones (SIP-T)
SIP-I ITU Q.1912 for ISUP/C7-to-SIP interworking

SS7 Protocols

  ETSI ETS 300 589
  ANSI T1.112


SCTP RFC 2960 Stream Control Transmission Protocol
M2UA RFC 3331 Signalling System 7 (SS7) Message Transfer Part 2 (MTP2) -User Adaptation Layer (M2UA)
M3UA RFC 3332 Signalling System 7 (SS7) Message Transfer Part 3 (MTP3) - User Adaptation Layer (M3UA)
SUA RFC 3868 Signalling Control Part User Adaptation Layer (SUA)
M2PA RFC 4165 Signalling System 7 (SS7) Message Transfer Part 2 (MTP2) User Peer-to-Peer Adaptation Layer (M2PA)

SS7 Dimensions

SS7 Low Speed Signalling Links (LSL) 2 to 512
High Speed Links (HSL) supporting Q.703 Annex A and ATM AAL5 2 to 16
Originating Point Codes 32
Destination Point Codes 1024
Linksets 128
A, F link support Yes

SS7-IP Performance

Server CPU   Pentium 3.0 GHz
Server RAM   2GB RAM
Form Factor   PCI
Message Flow M3UA >>
BHCA 720,000 1,440,000
Call Attempt/s 200s 400s
% CPU Usage Avg 25% Avg 80%
Call Completion 99.998% 99.998%
Simultaneous Calls Supported 10,000 10,000


SNMP Version 1,2 & 3 supported